[cairo-commit] [cairo-www] 2 commits - src/news src/roadmap.mdwn
Carl Worth
cworth at freedesktop.org
Fri Feb 29 12:07:34 PST 2008
src/news/cairo-1.5.12.mdwn | 151 +++++++++++++++++++++++++++++++++++++++++++++
src/roadmap.mdwn | 12 +--
2 files changed, 156 insertions(+), 7 deletions(-)
New commits:
commit 8492b86207084d4ddfb06a20856959caf7abe7de
Author: Carl Worth <cworth at cworth.org>
Date: Fri Feb 29 12:07:20 2008 -0800
roadmap: Mention the items fixed in 1.5.12
diff --git a/src/roadmap.mdwn b/src/roadmap.mdwn
index 74e7df3..675f078 100644
--- a/src/roadmap.mdwn
+++ b/src/roadmap.mdwn
@@ -44,13 +44,13 @@ abgr8888) (in 1.5.2)
✓ Fix generation of inefficient PostScript that crashes some printers (in 1.5.10)
-## In-progress
+ ✓ Implement `CAIRO_EXTEND_PAD` for surface patterns (in pixman)
+
+ ✓ Change from 16.16 to 24.8 for fixed-point storage (in 1.5.12)
- • Implement `CAIRO_EXTEND_PAD` for surface patterns (aazar)
+## In-progress
- Antoine has posted a [preliminary
- patch](http://lists.cairographics.org/archives/cairo/2008-January/012653.html)
- and will soon have an updated version.
+ • Depend on a newer pixman release (with support for CAIRO_EXTEND_PAD)
• Eliminate problems with "unsupported image formats" for xlib,
(very frequently duplicated bug reports and a regression since
@@ -60,8 +60,6 @@ abgr8888) (in 1.5.2)
4945 Cairo doesn't support 8-bit pseudocolor visuals
9719 Cairo doesn't support 655 xlib format
- • Change from 16.16 to 24.8 for fixed-point storage (vlad, cworth)
-
# cairo 1.6.x (Currently unscheduled)
• Fix all remaining XFAIL failures from the test suite.
commit 0053b87f2d52cf89b640d8f77d9e81ac34bb648a
Author: Carl Worth <cworth at cworth.org>
Date: Thu Feb 28 16:19:43 2008 -0800
Add cairo-1.5.12 news item
diff --git a/src/news/cairo-1.5.12.mdwn b/src/news/cairo-1.5.12.mdwn
new file mode 100644
index 0000000..22ef0d8
--- /dev/null
+++ b/src/news/cairo-1.5.12.mdwn
@@ -0,0 +1,151 @@
+[[meta title="cairo 1.5.12 snapshot available"]]
+[[meta data="2008-02-28"]]
+
+ From: Carl Worth <cworth at cworth.org>
+ Date: Thu, 28 Feb 2008 16:15:31 -0800
+ To: cairo-announce at cairographics.org
+ Cc: gnome-announce-list at gnome.org
+ Subject: cairo snapshot 1.5.12 now available
+
+ A new cairo snapshot 1.5.12 is now available from:
+
+ http://cairographics.org/snapshots/cairo-1.5.12.tar.gz
+
+ which can be verified with:
+
+ http://cairographics.org/snapshots/cairo-1.5.12.tar.gz.sha1
+ f101957fd0fbd76d9f670de95fc2a726b3d93262 cairo-1.5.12.tar.gz
+
+ http://cairographics.org/snapshots/cairo-1.5.12.tar.gz.sha1.asc
+ (signed by Carl Worth)
+
+ Additionally, a git clone of the source tree:
+
+ git clone git://git.cairographics.org/git/cairo
+
+ will include a signed 1.5.12 tag which points to a commit named:
+ 3ec4b9a4fc96572f099d0e9679fec9e5eb97a32e
+
+ which can be verified with:
+ git verify-tag 1.5.12
+
+ and can be checked out with a command such as:
+ git checkout -b build 1.5.12
+
+ This is the sixth snapshot in cairo's unstable 1.6 series. It comes
+ 1 week after the 1.5.10 snapshot. This snapshot includes the
+ long-awaited change from 16.16 to 24.8 fixed-point values, (see below
+ for why you should care and some caveats). It also includes several
+ backend-specific bug fixes.
+
+ As always, we appreciate whatever testing can be done. The change to
+ 24.8 coordinates is a fairly big change, (we found and fixed several
+ significant bugs after first making this change), so careful testing
+ will be particularly desired here.
+
+ The change to 24.8 coordinated was one of only very few requirements
+ on the short list of things to get done before 1.6. What remains is:
+
+ * Characterizing and working around an X server crash
+ triggered by the extend-reflect test.
+
+ * Adding support for more X server visuals (including
+ pseudocolor).
+
+ * Whatever needs to be done in pixman, (including lifting
+ 16-bit limits as discussed below).
+
+ So that's looking like cairo 1.6 is very close, (and will come sooner
+ with your help!). You're all getting 24 free hours tomorrow, perhaps
+ you'll want to spend some improving cairo?
+
+ Have fun with cairo everybody!
+
+ -Carl
+
+ 24.8 fixed-point format
+ -----------------------
+ Cairo has always converted path coordinates to a fixed-point
+ representation very early in its processing. Historically, this has
+ been a 32-bit representation with 16 bits of integer for the
+ device-pixel grid and 16 bits of sub-pixel positioning. The choice of
+ 16 bits for the integer coordinate space was based on the 16-bit limit
+ for X Window drawables.
+
+ This 16-bit limit has proven problematic for many applications. It's
+ an especially vexing problem when targeting non-X backends that don't
+ have any 16-bit restriction. But even when targeting cairo-xlib, it's
+ often desirable to draw a large shape, (say a background rectangle),
+ that extends beyond the surface bounds and expect it to fill the
+ surface completely, (rather than overflowing and triggering random
+ behavior).
+
+ Meanwhile, nobody has ever really needed 16 bits of sub-pixel
+ precision.
+
+ With this snapshot, the fixed-point system is still in place and is
+ still using a 32-bit representation, (future versions of cairo might
+ move entirely to floating-point when targeting PDF output for
+ example). But the representation now provides 24 bits of pixel
+ addressing and only 8 bits of sub-pixel positioning. This should give
+ a much less stifling space to many applications.
+
+ However, the underlying pixman library still has 16-bit limitations in
+ many places, (it has its roots in the X server as well). Until those
+ are also fixed, applications targeting cairo image surfaces, or
+ hitting software fallbacks when targeting other surfaces will still
+ encounter problems with device-space values needing more than 16
+ integer bits.
+
+ generic fixes
+ -------------
+ Add a few tests to the test suite to increase coverage.
+
+ Cleanup a few error-handling paths, (propagate error correctly).
+
+ cairo-ft
+ --------
+ Fix handling of font sizes smaller than 1 device pixel.
+
+ cairo-pdf
+ ---------
+ Fix to properly save/restore clip when analyzing meta-surface
+ patterns, (fixing a couple of test-suite failures).
+
+ Implement native support for CAIRO_OPERATOR_SOURCE when the source
+ pattern is opaque.
+
+ Emit rectangles as PDF rectangles ("re" operator) rather than as
+ general paths.
+
+ cairo-ps
+ --------
+ Fix to work properly with the 16.16->24.8 change.
+
+ cairo-svg
+ ---------
+ Fix CAIRO_EXTEND_REFLECT by using an image fallback, (there's no
+ direct SVG support for reflected patterns).
+
+ Fix the use of alpha-only masks, (such as CAIRO_FORMAT_A8).
+
+ cairo-quartz
+ ------------
+ Add new API for efficiently using image data as a source:
+
+ cairo_surface_t *
+ cairo_quartz_image_surface_create (cairo_surface_t *image_surface);
+
+ cairo_surface_t *
+ cairo_quartz_image_surface_get_image (cairo_surface_t *surface);
+
+ For full documentation, see:
+
+ http://cairographics.org/manual/cairo-Quartz-Surfaces.html#cairo-quartz-image-surface-create
+
+ Several fixes for cairo_mask().
+
+ cairo-atsui
+ -----------
+ Change default from from Monaco to Helvetica to be more consistent
+ with other font backends.
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